def parse(self, document, symbol_table=None):
symbol_table = symbol_table or EMPTY_TABLE
return parse(parsers.JsonParser(symbol_table), document)
def test_error_presentation(self):
document = dedent(
"""
# An example with several Bobs.
# One with hobbies.
{
"type_alias": "pants.engine.internals.parsers_test.Bob",
# And internal comment and blank lines.
"hobbies": [1, 2, 3]} {
# This comment is inside an empty object that started on the prior line!
}
# Another that is imaginary aged.
{
"type_alias": "pants.engine.internals.parsers_test.Bob",
"age": 42i,
"four": 1,
"five": 1,
"six": 1,
"seven": 1,
"eight": 1,
"nine": 1
}
"""
).strip()
filepath = "/dev/null"
with self.assertRaises(parser.ParseError) as exc:
parsers.JsonParser(EMPTY_TABLE).parse(
filepath, document, BuildFilePreludeSymbols(FrozenDict())
)
# Strip trailing whitespace from the message since our expected literal below will have
# trailing ws stripped via editors and code reviews calling for it.
actual_lines = [line.rstrip() for line in str(exc.exception).splitlines()]
# This message from the json stdlib varies between python releases, so fuzz the match a bit.
self.assertRegex(
actual_lines[0], r'Expecting (?:,|\',\'|",") delimiter: line 3 column 12 \(char 72\)'
)
self.assertEqual(
dedent(
"""
In document at {filepath}:
# An example with several Bobs.
# One with hobbies.
{{
"type_alias": "pants.engine.internals.parsers_test.Bob",
# And internal comment and blank lines.
"hobbies": [1, 2, 3]}} {{
# This comment is inside an empty object that started on the prior line!
}}
# Another that is imaginary aged.
1: {{
2: "type_alias": "pants.engine.internals.parsers_test.Bob",
3: "age": 42i,
4: "four": 1,
5: "five": 1,
6: "six": 1,
7: "seven": 1,
8: "eight": 1,
9: "nine": 1
10: }}
""".format(
filepath=filepath
)
).strip(),
"\n".join(actual_lines[1:]),
)